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1 | /*++\r |
2 | \r | |
3 | Copyright (c) 1999 - 2014, Intel Corporation. All rights reserved\r | |
4 | \r | |
5 | This program and the accompanying materials are licensed and made available under\r | |
6 | the terms and conditions of the BSD License that accompanies this distribution.\r | |
7 | The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php.\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | \r | |
14 | \r | |
15 | Module Name:\r | |
16 | \r | |
17 | IgdOGBDA.ASL\r | |
18 | \r | |
19 | Abstract:\r | |
20 | \r | |
21 | IGD OpRegion/Software SCI Reference Code for the Baytrail Family.\r | |
22 | This file contains Get BIOS Data Area funciton support for\r | |
23 | the Integrated Graphics Device (IGD) OpRegion/Software SCI mechanism.\r | |
24 | \r | |
25 | --*/\r | |
26 | \r | |
27 | \r | |
28 | Method (GBDA, 0, Serialized)\r | |
29 | {\r | |
30 | \r | |
31 | // Supported calls: Sub-function 0\r | |
32 | \r | |
33 | If (LEqual(GESF, 0))\r | |
34 | {\r | |
35 | //<TODO> Update implementation specific supported calls. Reference\r | |
36 | // code is set to Intel's validated implementation.\r | |
37 | \r | |
38 | Store(0x0000279, PARM)\r | |
39 | \r | |
40 | Store(Zero, GESF) // Clear the exit parameter\r | |
41 | Return(SUCC) // Success\r | |
42 | }\r | |
43 | \r | |
44 | // Requested callbacks: Sub-function 1\r | |
45 | \r | |
46 | If (LEqual(GESF, 1))\r | |
47 | {\r | |
48 | \r | |
49 | //<TODO> Update implementation specific system BIOS requested call\r | |
50 | // back functions. Call back functions are where the driver calls the\r | |
51 | // system BIOS at function indicated event.\r | |
52 | \r | |
53 | Store(0x00000240, PARM)\r | |
54 | \r | |
55 | Store(Zero, GESF) // Clear the exit parameter\r | |
56 | Return(SUCC) // Success\r | |
57 | }\r | |
58 | \r | |
59 | // Get Boot display Preferences: Sub-function 4\r | |
60 | \r | |
61 | If (LEqual(GESF, 4))\r | |
62 | {\r | |
63 | \r | |
64 | //<TODO> Update the implementation specific Get Boot Display\r | |
65 | // Preferences function.\r | |
66 | \r | |
67 | And(PARM, 0xEFFF0000, PARM) // PARM[30:16] = Boot device ports\r | |
68 | And(PARM, ShiftLeft(DeRefOf(Index(DBTB, IBTT)), 16), PARM)\r | |
69 | Or(IBTT, PARM, PARM) // PARM[7:0] = Boot device type\r | |
70 | \r | |
71 | Store(Zero, GESF) // Clear the exit parameter\r | |
72 | Return(SUCC) // Success\r | |
73 | }\r | |
74 | \r | |
75 | // Panel details: Sub-function 5\r | |
76 | \r | |
77 | If (LEqual(GESF, 5))\r | |
78 | {\r | |
79 | \r | |
80 | //<TODO> Update the implementation specific Get Panel Details\r | |
81 | // function.\r | |
82 | \r | |
83 | Store(IPSC, PARM) // Report the scaling setting\r | |
84 | Or(PARM, ShiftLeft(IPAT, 8), PARM)\r | |
85 | Add(PARM, 0x100, PARM) // Adjust panel type, 0 = VBT default\r | |
86 | Or(PARM, ShiftLeft(LIDS, 16), PARM) // Report the lid state\r | |
87 | Add(PARM, 0x10000, PARM) // Adjust the lid state, 0 = Unknown\r | |
88 | Or(PARM, ShiftLeft(IBLC, 18), PARM) // Report the BLC setting\r | |
89 | Or(PARM, ShiftLeft(IBIA, 20), PARM) // Report the BIA setting\r | |
90 | Store(Zero, GESF)\r | |
91 | Return(SUCC)\r | |
92 | }\r | |
93 | \r | |
94 | // TV-standard/Video-connector: Sub-function 6\r | |
95 | \r | |
96 | If (LEqual(GESF, 6))\r | |
97 | {\r | |
98 | \r | |
99 | //<TODO> Update the implementation specific Get\r | |
100 | // TV-standard/Video-connectorPanel function.\r | |
101 | \r | |
102 | Store(ITVF, PARM)\r | |
103 | Or(PARM, ShiftLeft(ITVM, 4), PARM)\r | |
104 | Store(Zero, GESF)\r | |
105 | Return(SUCC)\r | |
106 | }\r | |
107 | \r | |
108 | // Internal graphics: Sub-function 7\r | |
109 | \r | |
110 | If (LEqual(GESF, 7))\r | |
111 | {\r | |
112 | Store(GIVD, PARM) // PARM[0] - VGA mode(1=VGA)\r | |
113 | Xor(PARM, 1, PARM) // Invert the VGA mode polarity\r | |
114 | Or(PARM, ShiftLeft(GMFN, 1), PARM) // PARM[1] - # IGD PCI functions-1\r | |
115 | // PARM[3:2] - Reserved\r | |
116 | // PARM[4] - IGD D3 support(0=cold)\r | |
117 | // PARM[10:5] - Reserved\r | |
118 | Or(PARM, ShiftLeft(3, 11), PARM) // PARM[12:11] - DVMT mode(11b = 5.0)\r | |
119 | \r | |
120 | //\r | |
121 | // Report DVMT 5.0 Total Graphics memory size.\r | |
122 | //\r | |
123 | Or(PARM, ShiftLeft(IDMS, 17), PARM) // Bits 20:17 are for Gfx total memory size\r | |
124 | \r | |
125 | // If the "Set Internal Graphics" call is supported, the modified\r | |
126 | // settings flag must be programmed per the specification. This means\r | |
127 | // that the flag must be set to indicate that system BIOS requests\r | |
128 | // these settings. Once "Set Internal Graphics" is called, the\r | |
129 | // modified settings flag must be cleared on all subsequent calls to\r | |
130 | // this function.\r | |
131 | \r | |
132 | // Report the graphics frequency based on DISPLAY_CLOCK_FREQUENCY_ENCODING [MMADR+0x20C8]\r | |
133 | \r | |
134 | Or(ShiftLeft(Derefof(Index(CDCT, \_SB.PCI0.GFX0.MCHK.DCFE)), 21),PARM, PARM)\r | |
135 | \r | |
136 | Store(1, GESF) // Set the modified settings flag\r | |
137 | Return(SUCC)\r | |
138 | }\r | |
139 | \r | |
140 | // Spread spectrum clocks: Sub-function 10\r | |
141 | \r | |
142 | If (LEqual(GESF, 10))\r | |
143 | {\r | |
144 | \r | |
145 | Store(0, PARM) // Assume SSC is disabled\r | |
146 | \r | |
147 | If(ISSC)\r | |
148 | {\r | |
149 | Or(PARM, 3, PARM) // If SSC enabled, return SSC1+Enabled\r | |
150 | }\r | |
151 | \r | |
152 | Store(0, GESF) // Set the modified settings flag\r | |
153 | Return(SUCC) // Success\r | |
154 | }\r | |
155 | \r | |
156 | \r | |
157 | // A call to a reserved "Get BIOS data" function was received.\r | |
158 | \r | |
159 | Store(Zero, GESF) // Clear the exit parameter\r | |
160 | Return(CRIT) // Reserved, "Critical failure"\r | |
161 | }\r |